Modern valve aid with separate batteries
- Made:
- 1951
This image is released under a CC BY-NC-SA 4.0
Licence
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LicenseModern valve aid with separate batteries, Fortiphone
Science Museum Group
© The Board of Trustees of the Science Museum
Modern valve aid with separate batteries, Fortiphone, and chassis.
Details
- Category:
- Sound Reproduction
- Object Number:
- 1951-677
- type:
- valve
- credit:
- Hearing Aid Manufacturers Association
